Objective To test the attachment quality of autism children between 2～6 years with attach-ment Q-Sort,and to understand the difference from normal children. Methods Use the AQS to test the parents of 167 normal children and 55 autism children,which can evaluate the children' attachment types. Results The rate of security attachment in normal children was 68.3% ,and the rate of unsure attachment was 31.7%. The rate of security attachment in autism children was 29.1% ,and the rate of unsure attachment was 70.9% ;and the rates of security attachment in normal and autism children were different significantly(X2=26.16, P<0.01). Attachment quality was not associated with sex both in normal and autism children and neither age was. Conclusions Most of the normal children have the security attachment,and the autism children have the unsure attachment. Neither age nor sex is associated with attachment quality both normal children and autism children.